Photonic Sensors, 2014, 4 (2): 152, 网络出版: 2014-04-09
Acoustic Emission Source Linear Localization Based on an Ultra-Short FBGs Sensing System
Acoustic Emission Source Linear Localization Based on an Ultra-Short FBGs Sensing System
Acoustic emission (AE) linear location fiber Bragg gratings (FBGs) Gabor wavelet transform (WT) threshold analysis
摘要
Abstract
An acoustic emission (AE) linear location system was proposed, which employed fiber Bragg gratings (FBGs) as AE sensors. It was demonstrated that the FBG wavelength could be modulated as the static case when the grating length was much shorter than the AE wavelength. In addition, an improved AE location method based on the Gabor wavelet transform (WT) and threshold analysis was represented. The method was testified through AE linear location experiments based on a tunable narrow-band laser interrogation system using ultra-short FBG sensors as AE sensors. Results of the experiments showed that 86% of the linear location errors were less than 10 mm.
Zhongwei JIN, Mingshun JIANG, Qingmei SUI, Faye ZHANG, Lei JIA. Acoustic Emission Source Linear Localization Based on an Ultra-Short FBGs Sensing System[J]. Photonic Sensors, 2014, 4(2): 152. Zhongwei JIN, Mingshun JIANG, Qingmei SUI, Faye ZHANG, Lei JIA. Acoustic Emission Source Linear Localization Based on an Ultra-Short FBGs Sensing System[J]. Photonic Sensors, 2014, 4(2): 152.